Press for ice-machines.



tion of a press.

UNITED STATESH PATENT OEEICE.

DANIEL L. HOLDEN, oF PHILADELPHIA, PENNSYLYANIA.

`PritssFoR ICE-MACHINES.

SPECIFICATION forming part of Letters Patent N o. 701,882, ydated June10, 1902.

v Appiiatimi'ied August 16,1901. serial No. 72,220. (Nt model.) p

To all whom. .it may concern:

Be itknown that I, DANIEL L. HOLDEN, a citizen of the United States,residing atdPhiladelphia, in'the county 'of Philadelphia and` ice isforced in for compressionin order tov produce asolid and transparentblock, and the same means is utilizedto also remove any water whichpasses above the ice block second, the more secure and tight fasteningof the removable en d gate Vagainst which the block is compressed'andwhich is required to be firmly held during the process of blockformation and its possible moving-prevented while under such pressure. JY

My invention is illustrated in ,the accompanying drawings, in Which fFigure 1 is for the most part a central vertical section through afpress With the airpumps and connections not in section. Y Fig. 2 is auend View of one of a pairxof presses and a central cross-section of theother with the air-pumps and connectionsin elevation. Fig. 3 is anenlarged partial longitudinal sec- Fig. is an enlarged partialcross-section of a press.

Similar figures ofl reference Aindicate similar parts throughout theviews.

The presses 1 are of rectangular section, having pistons 2, Whose rods3'connec-t them with the hydrostatic cylinders. -(Not shown.) A hollowbed-plate 4 supports the presses. The sides '5 61of the-presses havevertical grooves 7 formed on their inner sideswhi`ch are metbycross=grooves 8 in top 9 and 10 in bottom 11, and Within the press isa rectangular lining *12,- having `multiple perforations 13 leadingtothe grooves. From grooves 9 there are also Water-passages 14, leadingto the space 15 under the presses and to a proper receptacle. (Notshown.) Grooves Shave longitudidal channels 16 connecting them andexterior to the lining 12 for air or Water pas- -the Ways 27 28.

sage, an'd above the grooves an opening17.

An air-pump 18 is located above thepresses, driven by pulley 19, andthereto are attached suction-pipes 2O 21, tapping openings 17 andtherethrough the whole system of grooves and channels for the purpose ofremoving the air from the presses. The pump delivers its accumulationtovfreezing-tank 22 througqh deli"very-pipev23, and a check-valve24'prevents g By the means described all freey any return. air passinginto the press with the ice particles, as also all released air when theice is being pressed toa block, is removed, thus =making a transparentblock. The ice particles are delivered to the presses throughpassage-Ways 25, the delivery being controlled by pumps and valves whicharethe subject of t other patents andneed not be further mentioned inthis application. t

At the outer 'end of the presses., opposite pistons 2, are the removableend. gates 26, Wedge-shaped or formed straight on therinner or pressside and tapered on the opposite or outer side, guided for verticalmovement 'by I Ways 27 28 and operated by cylinders 29, having. suitableattachments for the purpose.

The great pressure produced by pistons 2 on the ice particles in formingthe block is such as to sometimes overcome in a measure the power ofcylinders 29 to hold` gates 26to a close stoppageof the pressesends,owing to l ported above the notch on a shaft 33, carried y by bearings34. An arm 35 is securedto shaft 33. It has a rod 36 attached thereto,which passes back to the operators position, and by it he can move dog32 into or out of notch l31, thereby locking or unlockingthegate. To,still furtherins ure close contact'fbetvveen the gate and the ends of.the presses, `ay dovetailed v.recess or groove 37 is formed' in VtheAstraight face of the gate around the pressend; and a compressiblematerial 38 is placed therein, so that when the gates are in positionthe material shall yield to a sufficient degree to insure a perfectlyair-tight fit. The material ICO might be inserted in the press end; buton account of renewals and better facilityT for handling it is deemedbest to insert the yielding material in the gates.

I claiml. In an ice-machine, rectangular-section presses therefor,rectangular linings in the presses, vertical grooves around the sidelinings, horizontal grooves above the top lining and below the bottomlining, and passageways for air above the top lining and for water belowthe lower lining and connections from the top grooves to an exit for theair.

2. In rectangular section ice -machine presses, perforatedrectangularlinings therefor, vertical and horizontal grooves around thelinings and connected to the interior of the presses by the perforationsaforesaid, water-passages from the grooves at the bottom of the presses,air and water channels connecting the grooves at the top of the presses,a central passage, and apump having connections to said passage andadapted to remove the air from the passage-ways and grooves.

In an ice-machine, rectangular-section presses therefor, perforatedlinings for the presses, vertical and horizontal air and water groovesand passages around the linings, a pump having its supply or suctionconnections in communication with said grooves and passages and to thepresses by the liningperforations, and a delivery from the pump to thefreezing-tank of the machine.

et. In an ice-machine, a pairof rectangularsection presses therefor, apump having counections to each press to remove the air therefrom, and acheck-valve in the delivery-pipe of the pump.

5. In an ice-machine, rectangular-section presses therefor, end gatestherefor, having a vertical side next the press end, and an angular sideopposite thereto, means to remove the gates and uncover the press endsand means independent of the moving means to lock the gates when movedinto position, to thereby prevent the pressure from forcing the gatesupward on'their inclined face.

6. In an ice-machine, presses therefor, vertical end gates for thepresses and means for their moving, shafts supported above the gates,notches in the gates, and means supported on the shafts to engage thenotches and thereby lock the gates from raisin".

7. In an ice-machine, presses therefor having end gates and means fortheir vertical operation, and means under control of the operator forlocking the gates when moved into position and thereby prevent theirraising when subjected to pressure.

S. In an ice-machine rectangular-section presses, end gates therefor ofwedge shape, means to lift and lower the gates to cover or to uncoverthe press ends, and a yielding ma terial inserted in the vertical faceof the gates and adapted to be compressed to exclude air from thepresses.

9. In an ice-machine, rectangular-section presses therefor,wedge-section end gates for the presses, means to operate the gates forclosing and unclosing the presses, and yielding material so placed andfixed in the vertical face of the wedge-shaped gates as to preventair-passage between the ends of the presses and their gates when thegates are in operative position against and closing the presses.

In testimony whereof I affix my signature in presence of two witnesses.

DANIEL L 'IIOLDEN- XVi messes:

WILLIAM C. StroEvER, RANsoM C. WRIGHT.

